LeetCode

LeetCode solutions in C++ 11. (From Easy to Hard)

NO.	Title	Solution	Add Date	Difficulty
1	Single Number	C++	2014/10/15	Medium
2	Maximum Depth of Binary Tree	C++	2014/10/16	Easy
3	Same Tree	C++	2014/10/17	Easy
4	Reverse Integer	C++	2014/10/18	Easy
5	Best Time to Buy and Sell Stock II	C++	2014/10/19	Medium
6	Unique Binary Search Trees	C++	2014/10/20	Medium
7	Linked List Cycle	C++	10/21/2014	Medium
8	Binary Tree Inorder Traversal	C++	10/22/2014	Medium
9	Binary Tree Preorder Traversal	C++	10/23/2014	Medium
10	Populating Next Right Pointers in Each Node	C++	10/24/2014	Medium
11	Search Insert Position	C++	10/25/2014	Medium
12	Remove Duplicates from Sorted List	C++	10/26/2014	Easy
13	Climbing Stairs	C++	10/27/2014	Easy
14	Maximum Subarray	C++	10/28/2014	Medium
15	N-Queens II	C++	10/29/2014	Hard
16	Roman to Integer	C++	10/30/2014	Easy
17	Integer to Roman	C++	10/31/2014	Medium
18	Single Number II	C++	11/1/2014	Medium
19	Merge Two Sorted Lists	C++	11/2/2014	Easy
20	Remove Element	C++	11/3/2014	Easy
21	Convert Sorted Array to Binary Search Tree	C++	11/4/2014	Medium
22	Balanced Binary Tree	C++	11/5/2014	Easy
23	Swap Nodes in Pairs	C++	11/6/2014	Medium
24	Remove Duplicates from Sorted Array	C++	11/7/2014	Easy
25	Sort Colors	C++	11/8/2014	Medium
26	Merge Sorted Array	C++	11/9/2014	Easy
27	Symmetric Tree	C++	11/10/2014	Easy
28	Gray Code	C++	11/11/2014	Medium
29	Unique Paths	C++	11/12/2014	Medium
30	Plus One	C++	11/13/2014	Easy
31	Generate Parentheses	C++	11/14/2014	Medium
32	Pascal's Triangle	C++	11/15/2014	Easy
33	Container With Most Water	C++	11/16/2014	Medium
34	Permutations	C++	11/17/2014	Medium
35	Rotate Image	C++	11/18/2014	Medium
36	Search a 2D Matrix	C++	11/19/2014	Medium
37	Find Minimum in Rotated Sorted Array	C++	11/20/2014	Medium
38	Minimum Path Sum	C++	11/21/2014	Medium
39	Best Time to Buy and Sell Stock	C++	11/22/2014	Medium
40	Binary Tree Level Order Traversal II	C++	11/23/2014	Easy
41	Search in Rotated Sorted Array II	C++	11/24/2014	Medium
42	Binary Tree Postorder Traversal	C++	11/25/2014	Hard
43	Linked List Cycle II	C++	11/26/2014	Medium
44	Set Matrix Zeroes	C++	11/27/2014	Medium
45	Spiral Matrix II	C++	11/28/2014	Medium
46	Remove Duplicates from Sorted Array II	C++	11/29/2014	Medium
47	Populating Next Right Pointers in Each Node II	C++	11/30/2014	Hard
48	Binary Tree Level Order Traversal	C++	12/1/2014	Easy
49	Path Sum	C++	12/2/2014	Easy
50	Pascal's Triangle II	C++	12/3/2014	Easy
51	Combinations	C++	12/4/2014	Medium
52	Sum Root to Leaf Numbers	C++	12/5/2014	Medium
53	Remove Nth Node from End of List	C++	12/6/2014	Easy
54	Minimum Depth of Binary Tree	C++	12/7/2014	Easy
55	Length of Last Word	C++	12/8/2014	Easy
56	Trapping Rain Water	C++	12/9/2014	Hard
57	Palindrome Number	C++	12/10/2014	Easy
58	Search in Rotated Sorted Array	C++	12/11/2014	Hard
59	Valid Parentheses	C++	12/12/2014	Easy
60	Flatten Binary Tree to Linked List	C++	12/13/2014	Medium
61	Longest Consecutive Sequence	C++	12/14/2014	Hard
62	Unique Paths II	C++	12/15/2014	Medium
63	Subsets	C++	12/16/2014	Medium
64	Valid Sudoku	C++	12/17/2014	Easy
65	Unique Binary Search Trees II	C++	12/18/2014	Medium
66	Convert Sorted List to Binary Search Tree	C++	12/19/2014	Medium
67	Search for a Range	C++	12/20/2014	Medium
68	Jump Game	C++	12/21/2014	Medium
69	Count and Say	C++	12/22/2014	Easy
70	Longest Common Prefix	C++	12/23/2014	Easy
71	Subsets II	C++	12/24/2014	Medium
72	Partition List	C++	12/25/2014	Medium
73	3Sum Closest	C++	12/26/2014	Medium
74	Path Sum II	C++	12/27/2014	Medium
75	Combination Sum	C++	12/28/2014	Medium
76	Triangle	C++	12/29/2014	Medium
77	Construct Binary Tree from Inorder and Postorder Traversal	C++	12/30/2014	Medium
78	Binary Tree Zigzag Level Order Traversal	C++	12/31/2014	Medium
79	Construct Binary Tree from Preorder and Inorder Traversal	C++	1/1/2015	Medium
80	Letter Combinations of a Phone Number	C++	1/2/2015	Medium
81	Reverse Linked List II	C++	1/3/2015	Medium
82	Pow(x, n)	C++	1/4/2015	Medium
83	N-Queens	C++	1/5/2015	Hard
84	Gas Station	C++	1/6/2015	Medium
85	Palindrome Partitioning	C++	1/7/2015	Medium
86	Validate Binary Search Tree	C++	1/8/2015	Medium
87	Add Binary	C++	1/9/2015	Easy
88	Edit Distance	C++	1/10/2015	Hard
89	Next Permutation	C++	1/11/2015	Medium
90	Insertion Sort List	C++	1/12/2015	Medium
91	Reverse Nodes in k-Group	C++	1/13/2015	Hard
92	Distinct Subsequences	C++	1/14/2015	Hard
93	Permutations II	C++	1/15/2015	Hard
94	Remove Duplicates from Sorted List II	C++	1/16/2015	Medium
95	Jump Game II	C++	1/17/2015	Hard
96	Combination Sum II	C++	1/18/2015	Medium
97	Anagrams	C++	1/19/2015	Medium
98	Recover Binary Search Tree	C++	1/20/2015	Hard
99	ZigZag Conversion	C++	1/21/2015	Easy
100	Copy List with Random Pointer	C++	1/22/2015	Hard
101	Clone Graph	C++	1/23/2015	Medium
102	Add Two Numbers	C++	1/24/2015	Medium
103	Scramble String	C++	1/25/2015	Hard
104	Valid Palindrome	C++	1/26/2015	Easy
105	First Missing Positive	C++	1/27/2015	Hard
106	Best Time to Buy and Sell Stock III	C++	1/28/2015	Hard
107	Sqrt(x)	C++	1/29/2015	Medium
108	Permutation Sequence	C++	1/30/2015	Medium
109	Longest Substring Without Repeating Characters	C++	1/31/2015	Medium
110	Rotate List	C++	2/1/2015	Medium
111	Implement strStr()	C++	2/2/2015	Easy
112	4Sum	C++	2/3/2015	Medium
113	Maximal Rectangle	C++	2/4/2015	Hard
114	Largest Rectangle in Histogram	C++	2/5/2015	Hard
115	Merge k Sorted Lists	C++	2/6/2015	Hard
116	Word Break	C++	2/7/2015	Medium
117	Merge Intervals	C++	2/8/2015	Hard
118	Sudoku Solver	C++	2/9/2015	Hard
119	Longest Palindromic Substring	C++	2/10/2015	Medium
120	Insert Interval	C++	2/11/2015	Hard
121	Spiral Matrix	C++	2/12/2015	Medium
122	Sort List	C++	2/13/2015	Medium
123	Restore IP Addresses	C++	2/14/2015	Medium
124	Multiply Strings	C++	2/15/2015	Medium
125	Reorder List	C++	2/16/2015	Medium
126	Binary Tree Maximum Path Sum	C++	2/17/2015	Hard
127	Regular Expression Matching	C++	2/18/2015	Hard
128	Simplify Path	C++	2/19/2015	Medium
129	Word Search	C++	2/20/2015	Medium
130	Evaluate Reverse Polish Notation	C++	2/21/2015	Medium
131	Longest Valid Parentheses	C++	2/22/2015	Hard
132	Interleaving String	C++	2/23/2015	Hard
133	Candy	C++	2/24/2015	Hard
134	Find Minimum in Rotated Sorted Array II	C++	2/25/2015	Hard
135	Word Ladder	C++	2/26/2015	Medium
136	Two Sum	C++	2/27/2015	Medium
137	Palindrome Partitioning II	C++	2/28/2015	Hard
138	Minimum Window Substring	C++	3/1/2015	Hard
139	Substring with Concatenation of All Words	C++	3/2/2015	Hard
140	Median of Two Sorted Arrays	C++	3/3/2015	Hard
141	3Sum	C++	3/4/2015	Medium
142	Divide Two Integers	C++	3/5/2015	Medium
143	Word Break II	C++	3/6/2015	Hard
144	Decode Ways	C++	3/7/2015	Medium
145	Maximum Product Subarray	C++	3/8/2015	Medium
146	String to Integer (atoi)	C++	3/9/2015	Easy
147	Wildcard Matching	C++	3/10/2015	Hard
148	Surrounded Regions	C++	3/11/2015	Medium
149	Reverse Words in a String	C++	3/12/2015	Medium
150	LRU Cache	C++	3/13/2015	Hard
151	Text Justification	C++	3/14/2015	Hard
152	Word Ladder II	C++	3/15/2015	Hard
153	Valid Number	C++	3/16/2015	Hard
154	Max Points on a Line	C++	3/17/2015	Hard